Twins or single turbo?
So if I do end up going twins what brand and size should I go with in my engine set up
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Joined: Mar 2013
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"Choosing between a single or parallel twin turbo setup is primarily based on packaging constraints in the engine bay, or a personal choice by the tuner. In most cases, for top performance, a single turbo is preferable because larger turbos are generally more efficient than smaller turbos. However, often there is not room for one large single, or the tuner wants the visual impact of twin turbos."
https://www.turbobygarrett.com/turbo...between_turbos
https://www.turbobygarrett.com/turbo...between_turbos
"Choosing between a single or parallel twin turbo setup is primarily based on packaging constraints in the engine bay, or a personal choice by the tuner. In most cases, for top performance, a single turbo is preferable because larger turbos are generally more efficient than smaller turbos. However, often there is not room for one large single, or the tuner wants the visual impact of twin turbos."
https://www.turbobygarrett.com/turbo...between_turbos
https://www.turbobygarrett.com/turbo...between_turbos
There is a reason the fastest turbo race cars in the world run twins and not a big single and i'm quite sure its not "packaging constraints" But.. That's just my opinion.
Last edited by oscs; Aug 26, 2016 at 04:55 PM.
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Joined: Mar 2013
Posts: 502
Likes: 38
^^ All good points. I always wish that Garrett had been more specific and given their parameters when making that statement. It would be interesting to know under which conditions exactly they would recommend a single over twins for "top" performance. We may even disagree with them about what "top" performance means.
Originally Posted by gsteele
^^ All good points. I always wish that Garrett had been more specific and given their parameters when making that statement. It would be interesting to know under which conditions exactly they would recommend a single over twins for "top" performance. We may even disagree with them about what "top" performance means.
[QUOTE=1CAMWNDR;19371749]If it were me I would put a billet S480 and turn it to about 25 psi.....[/QUOTE
That's what I thinknima end up doing just staying how I am and get the BW
Maybe will go twins when I finish my 408motor later
That's what I thinknima end up doing just staying how I am and get the BW
Maybe will go twins when I finish my 408motor later
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I did call them and talked to them but asked them and all they told me is that I need to send the turbo in and so they can see what they can do
So u think the s480 is a good choice and with that turbo would I have room to grow into it?
Talk to Forced Inductions about what it can do with your current 383 and future 408 and if they recommend different turbine wheels or housings.
Originally Posted by 1CAMWNDR
A billet S480 with the correct turbine side for your engine will make all the power you could dream of in a small bore 383. Then throw it on your bigger bore 408 and let it breathe. Might consider a turbine side change with the 408.....but it will damn sure work. Depending on cam/heads/rpm/tune you can make 1000whp+ with a 408 and a billet S480.
Talk to Forced Inductions about what it can do with your current 383 and future 408 and if they recommend different turbine wheels or housings.
Talk to Forced Inductions about what it can do with your current 383 and future 408 and if they recommend different turbine wheels or housings.
Have you talked to Casey at Huron Speed? Super helpful with getting you set up to meet or exceed your goal. My buddy has their twin kit with 2 precision 66mm turbos and he hit well over 1200 rwhp at about 24 lbs and there is still room to turn it up. This is on a Thompson Motorsports forged 370 ls motor he got through Huron Speed. I've got their single turbo kit that retains ac going on my car right now. I'll be running a turbonetics 78/75. All is going really well with the install. Should make over 600 on low boost with some meth. Bottom line...Casey can hook you up completely at a great price with lots of help before and after the sale. This is from personal experience on two builds. His email is casey@huronspeed.com.